I am looking into getting a power amp for my bass rig... Right now I am running an Ampeg br-1 which does not have enough power for me. In my rack I have an Alesis Compressor, Tech 21-Sansamp RBI-1, behringer sonic maximizer, and krog tuner. I am using an Ampeg 4 x 10 cabinet with tweeter and a fender 4 X10 with a tweeter. I need to replace my Ampeg head and replace with a good(but cheap power amp) I have been looking at QSC GX3 and Crown XL1000. Does anyone have any good suggestions on the two I am looking at or can recommend a good power amp? Thanks.